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package main
import (
"github.com/kubernetes-incubator/cri-o/cmd/kpod/formats"
"github.com/kubernetes-incubator/cri-o/libkpod"
"github.com/kubernetes-incubator/cri-o/libpod/images"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
const (
inspectTypeContainer = "container"
inspectTypeImage = "image"
inspectAll = "all"
)
var (
inspectFlags = []cli.Flag{
cli.StringFlag{
Name: "type, t",
Value: inspectAll,
Usage: "Return JSON for specified type, (e.g image, container or task)",
},
cli.StringFlag{
Name: "format, f",
Usage: "Change the output format to a Go template",
},
cli.BoolFlag{
Name: "size",
Usage: "Display total file size if the type is container",
},
}
inspectDescription = "This displays the low-level information on containers and images identified by name or ID. By default, this will render all results in a JSON array. If the container and image have the same name, this will return container JSON for unspecified type."
inspectCommand = cli.Command{
Name: "inspect",
Usage: "Displays the configuration of a container or image",
Description: inspectDescription,
Flags: inspectFlags,
Action: inspectCmd,
ArgsUsage: "CONTAINER-OR-IMAGE",
}
)
func inspectCmd(c *cli.Context) error {
args := c.Args()
if len(args) == 0 {
return errors.Errorf("container or image name must be specified: kpod inspect [options [...]] name")
}
if len(args) > 1 {
return errors.Errorf("too many arguments specified")
}
if err := validateFlags(c, inspectFlags); err != nil {
return err
}
itemType := c.String("type")
size := c.Bool("size")
switch itemType {
case inspectTypeContainer:
case inspectTypeImage:
case inspectAll:
default:
return errors.Errorf("the only recognized types are %q, %q, and %q", inspectTypeContainer, inspectTypeImage, inspectAll)
}
name := args[0]
config, err := getConfig(c)
if err != nil {
return errors.Wrapf(err, "Could not get config")
}
server, err := libkpod.New(config)
if err != nil {
return errors.Wrapf(err, "could not get container server")
}
defer server.Shutdown()
if err = server.Update(); err != nil {
return errors.Wrapf(err, "could not update list of containers")
}
outputFormat := c.String("format")
var data interface{}
switch itemType {
case inspectTypeContainer:
data, err = server.GetContainerData(name, size)
if err != nil {
return errors.Wrapf(err, "error parsing container data")
}
case inspectTypeImage:
data, err = images.GetData(server.Store(), name)
if err != nil {
return errors.Wrapf(err, "error parsing image data")
}
case inspectAll:
ctrData, err := server.GetContainerData(name, size)
if err != nil {
imgData, err := images.GetData(server.Store(), name)
if err != nil {
return errors.Wrapf(err, "error parsing container or image data")
}
data = imgData
} else {
data = ctrData
}
}
var out formats.Writer
if outputFormat != "" && outputFormat != formats.JSONString {
//template
out = formats.StdoutTemplate{Output: data, Template: outputFormat}
} else {
// default is json output
out = formats.JSONStruct{Output: data}
}
formats.Writer(out).Out()
return nil
}
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